1. All of the plaintiffs' claims are dismissed.

2. The costs of lawsuit are assessed against the plaintiffs.

1. Details of the disposition;

A. On February 10, 2015, the Plaintiff Co., Ltd. (hereinafter “Plaintiff Co., Ltd”) concluded a service agreement with Seoul Special Metropolitan City, from February 11, 2015 to February 10, 2016, with two crosssections, and with two subsections and two subsections and two subsections, and with D intersections, respectively, and designated Plaintiff B as a responsible engineer.

Part 1 Section 3 of the General Provisions 1.3.2. Contents scope

1. On the basis of frequent traffic accidents and proposals proposed by basic plans and diagnostic services for working plans (1) of the branch of a special road traffic safety diagnosis, as well as (4) the survey and examination of points to be improved in the short-term period, the preparation of a work schedule for all of the basic and examination of working plans, and the preparation of a work site design drawings for calculation of construction costs, and the general matters in Section 1 of Section 3 of the working plans for Chapter III, which are to be prepared at the time of construction works;

3.3.2.traffic signals;

1. (8) A signalling pole shall be purchased underground, and a detailed drawing shall be designed for a brupt;

Part 4: General Matters 4.2.2. Design drawings

1. Since frequent places of traffic accidents are different in traffic environments and types by location, individual drawings (to be prepared by dividing into one comprehensive improvement drawings, one civil engineering facility and surface drawings, one safety signs, one signal apparatus, etc.) shall be prepared for each location;

2. Design drawings shall be prepared in detail so as to make it easy to understand them, and the description of the drawings shall be written in such a way as to make it difficult for the contractor to understand them or may cause confusion in interpretation;

9. The design review drawing shall be attached to the right side of the design drawing, and the location, measurements, etc. of each facility and the size, quantity, and other matters to be examined, after examination by the responsible professional engineer, shall be submitted with a seal thereon;

4.2.3.Construction specifications;